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Flexibility of LHD Configuration with Multi-Layer Helical Coils
http://hdl.handle.net/10655/2651
http://hdl.handle.net/10655/2651d5b11861-56fd-460c-8988-2f1ee5135dfb
名前 / ファイル | ライセンス | アクション |
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NIFS-383.pdf (785.5 kB)
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Item type | 研究報告書 / Research Paper(1) | |||||
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公開日 | 2010-02-05 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Flexibility of LHD Configuration with Multi-Layer Helical Coils | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | LHD | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | multi-layer helical coils | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | heliotron | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | magnetic well | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Mercier criterion | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | bootstrap current | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_18ws | |||||
資源タイプ | research report | |||||
著者 |
Ichiguchi, K.
× Ichiguchi, K.× Motojima, O.× Yamazaki, K.× Nakajima, N.× Okamoto, M. |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The Large Helical Device (LHD) is a heliotron device with two helical coils, each of which has a structure of three current layers. It is designed so that the current in each layer should be controlled independently. By changing the combination of the coil current in the layers, it is possible to vary the effective minor radius of the helical coils, which enlarges the flexibility of the configuration. The properties of the plasmas for several combinations of the layers are investigated numerically. In the vacuum configuration, it is obtained that the combination of the layers corresponding to a large effective coil radius has a large outermost surface. In this case, the rotational transform decreases and the magnetic hill is reduced compared with the configuration with all three layers. The large Shafranov shift which is due to the small rotational transform enhances the magnetic well and the magnetic shear to stabilize the Mercier mode, however, it degrades the equilibrium beta limit. In the case of the combination for a small effective coil radius, the Mercier mode is destabilized, because the magnetic hill is enhanced. The effect on the bootstrap current is also studied. | |||||
書誌情報 |
en : Research Report NIFS-Series 発行日 1995-11-01 |
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報告書番号 | ||||||
NIFS-383 | ||||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0915-633X |